PT-2019-13165

Name of the Vulnerable Software and Affected Versions Asterisk Open Source versions 13.27.0 and earlier, 14.x, 15.x through 15.7.2, and 16.x through 16.4.0 Certified Asterisk version 13.21-cert3 Description An issue allows an attacker to crash Asterisk when handling an SDP answer to an outgoing...

asterisk -- Remote Crash Vulnerability in chan_sip channel driver

The Asterisk project reports: When T.38 faxing is done in Asterisk a T.38 reinvite may be sent to an endpoint to switch it to T.38. If the endpoint responds with an improperly formatted SDP answer including both a T.38 UDPTL stream and an audio or video stream containing only codecs not allowed o...